Injector.



MY N O J l nventor.

Attorneys UNITED STATES PATENT OFFICE.

. LOVREN E. HOGUEQOF GREENVILLE, PEI INSYLVANIA.

INJEQTO B.

Specification of Letters Patent. Application 1110a September as, 1905.- "Serial No. 279.821.

Patented Oct. 23, 1906.

To all whom it may concern.-

Be it known that I, LovnEN E. HOGUE, a citizen of the United States, residing at Greenville, in the county of Mercer and State of Pennsylvania, have invented a new and useful Injector, of which the following is a specification.

This invention relates to boiler-feeding in-; jectors, and has for its principal object to simplify the construction ofthe injector and to so arrange and construct the parts as to provide for the ready passage of the overflow at a point close to the water-inlet.

A further object of the invention is to pr vide an injector in which a free passage is afforded the steam in escaping at the beginning of the operation, and, further, to provide independent valved outlets for both the cold and the hot water overflow.

A still further object of the invention is to provide a novel form of forcing-tube so arranged as to permit the passage of hot water to the overflow at the beginning of the operation while preventing the passage of the wa-' ter to the overflow when at boiler-pressure.

A still further object of the invention is to provide an injector ofvery simple and economical construction having connections similar to those employed on standard 'in-, jectors, so that it may be readily substituted therefor without any change in the piping or other connections. 7

With these and other objects in view, ,as will more ,iully hereinafter appear, the invention consists in certain novel features of construction and arrangement of (parts, here-- inafter fully described,illustrate in the accompanying drawings, and particularly point; ed out in theappended claims, it being understood that various changes in the form, proportions, size, and minor details of the structure may be made without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings, Figure 1 is a vertical section of aninjector constructed in accordance/with theinvention. Figs. 2 and 3 are transverse sectional views of the same on the lines 2 2 and 3 3, respectively, of Fi 2 1.

imilar numerals of reference are em ployed to indicate corresponding arts throughoutthe several figures of the lugs. I D I The main casing 1'1) ofthe n ector is provided with a steam connection 11 and a wa-- mg is a transversely-extending partition 13 to divide the steam and water inlets, and in said partition is an opening for the reception g of the steam tube 15, the latter having an enlarged shoulder 16, that fits against the steam side of the partition,'while the end of the steam-tube projects across the water-inlet chamber.

At the end of the casing is a threaded open-- ing for the reception of a stufiing-box mem- 7o asses the steamber 18, through which valve stem 20, the latter eing connected in the usual manner to an operatin -lever 21. The openingin which the stuffing ox member 18 is'screwed is ofsufiicient diameter to permit the insertion of the steam-tube 15, the latter being forced into place, or, if necessary, being provided with screw-threadsto' insure its'remainin in proper position.

jector is a transverse partition 24, having a threaded opening for the reception of the threaded periphery of a liftin tube 25, the wider end of t vent overheating of the water the Waterchamber, a portion of the partition 13 is cored out, as indicated at 26, so that the 6 water cannot be heated by direct radiation from the steam.

,In the pump-barrel IS a second transverse partition 30, havin a threaded opening for the reception of a t eaded fiange31 onithe 5 forcing or combining tube 32, the o ening in the partition 30 being of sufiicient iameter to permit the ready passage of the liftingtube 25.

The partition 30 divides the main barrel roe flow-opening 37 for the passage of the hot 105 water overflow.

The outer \face of the barrel 23 is turned in order to receive the casing 38 of the overflow-chamber 39, and from said casing leads an outlet 40 to permit the escape of the [10 water andsteam. The overflow-casing may be held'in place by bolts 11, and is so arranged Near the rear of the cas- 6o Near the rear en of a barrel 23 of the ine latter facing t c steam-tube and an annular space being formed between 8 the two through which the water may pass from the water-chamber. In order to pre- Q 1 y y.

\ tank'to prevent t in connection with the overflow-outlets 36 Eterfly-valve 59, by which the and 37 that'there is no danger of the setting up of a-circulation of water between the outlets, which might otherwise occur if both 0 enings were arranged on the same side of t e .barrel.- In the present instance, how- "ever, any water passing through either of the openings will opening 40.

The openings 36 and 37 may be closed by pivoted valves 42, that are curved to follow the contour of the barrel, and will close gently said valves being so arranged as to offer ractically no resistance to the passage of t e overflow-Water, but close tig tly on the condensation of the steam within the barrel in order to'prevent' the entrance of air. These, valves may be locked during cold weather-by set-screws 44 when it is desired to allow a small quantity of steam to flow down through the inlet-pipe 12 to the e arts from freezing.

is a combined forcing flow instantly to the discharge- The tube 32 which and'delivery tube, projects partly within the chamber 34 and is provided with openings 45 to 'ermit the passage of steam. At the outer end ofthe tube is a disk 46, which is held a ainst the end of the barrel by the'casing 47, w ich supports the check-valve 48. The disk and tube 32 are formedintegral, and at the outerface of the disk isa boss 49, havingl a square or hexagonal surface to be engage by a wrench in insertingthe tube.

The lar 'est diameter of the tubeis within the chem er 34, and from this the tube tapers on convergent lines toward the point and from thence on convergentlines at a lesser angle toward the point 51 and thence on parallel lines toward the point 52 and thence on divergent lines toward the end of the tube, this portion forming the deliverytube. l i I Immediatelybeyond the point. in intersection of the two angles 50 are arranged a number of openings 55-for .the passage of water and steam,'andv beyond'the point 51 are openings 56, while within the line 52-- that 1s ,to say, in advance of the delivery portion of the tubes-are arranged o enings 57, all of these openin s permittm t e free. assage .of water an steam to Form the ot:

- water overflow, the water escaping until the pressure is sufficient to overcome the boilerpressure; but it will be noted that in each case the gpenmgs are so arranged that they do not ai in the escape of the water while the stream is converging, this being especially true of the openings 57, which are arranged in advance of the beginning of the deliver ortion of the tube. If arranged beyon t at point, the water passing, being at boilerressure, will tend to expand backward an pass throu h the o enin s.

The water-pipe 12 1s provi ed with-a butquantity of water entering the injectoris controlled.

In 0 eration the valve-stem 20 is opened to allo steam to enter the steam-tube l5, and this steam in'pas sing through the liftin tube 25 will enter the chamber 34 and wil open valve 42, escaping through the overflowopening. On the admission of a small quantity of water the steam is condensed, forming a vacuum which will draw in more water, and this water will first pass through the tube 25 in the chamber 24 and through theoverflow-opening 36. As the steam continues to act it will force a stream of water into the,

tube 32, mingling-therewith, and a portion of this hot water and steam will flow through the openings in the tubes to the chamber 35 and thencejpass through the opening 37 to the overflow. The rapid condensation of the steam, however, will create a partial vacuum within the overflow-chamber, and the barrel and the valves 42 will be moved to closed position and held closed by atmospheric pressure in order to prevent the entrance of air.

The boiler check-valve is preferably laced at some little distance from the de iverytube in order that the stream may be given sufiicient impetus or momentum to quickly 0 en said valve, it bein found in practice t at the injector is in full working condition within two seconds of the initial openin of the steam-valve, so that but a tri 'ng amount of water is wasted at the overflow.

In manufacturing the injector the main casing or barrel 23 is turned and finished on its outer face, and the overflow-casin 38 is likewise finished on its inner face and when forced onto the barrel forms a tight joint therewith. The outwardly-projecting portions of the overflow-cas n arranged oppositethe overflow-openingfieading from the barrel are designed to receive the valves 42.

These valves are usually made by casting an annulus of brass or similar material and turning or finishing the inner face thereof to correspond to the curvature of the barrel. The annulus is then divided into sections, each section forming a valve, and the valves are hin ed to the overflow-casin in such manner t at when the latter is p aced in position they will fit snugly against the outer face of the barrel.

Having thus described the invention, What is claimed is 1. In an injector, a casing-having independent hot. and cold water overflow openings arranged on opposite sides, respectively, of the casing to prevent the setting up of circulation throu h the casing and openings, and separate se f-closing valves for said openings.

2. In an injector, a casing, a forcing-tube mounted Within'the casing, a partition exproximately central easing into hot an tending across the casing and carrying said forcing-tube, the partition dividing the easing into two compartments,- there bein independent overflow-openings leading to both chambers, and va ved overflow-openings leading from opposite sides, respectively,

of said chambers. 4. In an injector, a casi having steam and water inlets, a partition ividing the casing into two chambers, a forcing-tube carried 7 by the partition and provided with perforac 20 arranged in advance of the forcing-tube andtions leading to both ambers, a lifting-tube having its inner end opening into one of said compartments to permit the direct passage of steam andcold water, an overflow-chamber mounted on the casing and having an om opposite sides, respectively, of said com: partments, and separate self-closing valves barrel and servmg to close outlet for the escape of steam, and a hot and cold water overflow, and valved openings arranged at-opposite sides, respectively, of a said chambers.

5. In an injector, a casing having steam and water inlets, and a barre the upper face of which is finished, said barrel being provided with hot and cold water overflow open ings arranged one at one side, and the other at the other side of the barrel, an overflowcasing mounted on the (periphery of the barrel and having recesse portionsfacing the openings, and valves formed of metallic s'egments, the upper ends of which are pivoted to the casing, the concaved faces of said segments resting against the periphery of the e overflowopemngs. v I t In testimony that I claim the foregoing as my own I have hereto aflixed my signature in the presence of two witnesses,

' LOVREN E. HOGUE. Witnesses:

JNo. E. PARKER, J. H. Joomm, Jr. 

